/*!
 * jquery.base64.js 0.0.3 - https://github.com/yckart/jquery.base64.js
 * Makes Base64 en & -decoding simpler as it is.
 *
 * Based upon: https://gist.github.com/Yaffle/1284012
 *
 * Copyright (c) 2012 Yannick Albert (http://yckart.com)
 * Licensed under the MIT license (http://www.opensource.org/licenses/mit-license.php).
 * 2013/02/10
 **/
;(function($) {
  
      var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",
          a256 = '',
          r64 = [256],
          r256 = [256],
          i = 0;
  
      var UTF8 = {
  
          /**
           * Encode multi-byte Unicode string into utf-8 multiple single-byte characters
           * (BMP / basic multilingual plane only)
           *
           * Chars in range U+0080 - U+07FF are encoded in 2 chars, U+0800 - U+FFFF in 3 chars
           *
           * @param {String} strUni Unicode string to be encoded as UTF-8
           * @returns {String} encoded string
           */
          encode: function(strUni) {
              // use regular expressions & String.replace callback function for better efficiency
              // than procedural approaches
              var strUtf = strUni.replace(/[\u0080-\u07ff]/g, // U+0080 - U+07FF => 2 bytes 110yyyyy, 10zzzzzz
              function(c) {
                  var cc = c.charCodeAt(0);
                  return String.fromCharCode(0xc0 | cc >> 6, 0x80 | cc & 0x3f);
              })
              .replace(/[\u0800-\uffff]/g, // U+0800 - U+FFFF => 3 bytes 1110xxxx, 10yyyyyy, 10zzzzzz
              function(c) {
                  var cc = c.charCodeAt(0);
                  return String.fromCharCode(0xe0 | cc >> 12, 0x80 | cc >> 6 & 0x3F, 0x80 | cc & 0x3f);
              });
              return strUtf;
          },
  
          /**
           * Decode utf-8 encoded string back into multi-byte Unicode characters
           *
           * @param {String} strUtf UTF-8 string to be decoded back to Unicode
           * @returns {String} decoded string
           */
          decode: function(strUtf) {
              // note: decode 3-byte chars first as decoded 2-byte strings could appear to be 3-byte char!
              var strUni = strUtf.replace(/[\u00e0-\u00ef][\u0080-\u00bf][\u0080-\u00bf]/g, // 3-byte chars
              function(c) { // (note parentheses for precence)
                  var cc = ((c.charCodeAt(0) & 0x0f) << 12) | ((c.charCodeAt(1) & 0x3f) << 6) | (c.charCodeAt(2) & 0x3f);
                  return String.fromCharCode(cc);
              })
              .replace(/[\u00c0-\u00df][\u0080-\u00bf]/g, // 2-byte chars
              function(c) { // (note parentheses for precence)
                  var cc = (c.charCodeAt(0) & 0x1f) << 6 | c.charCodeAt(1) & 0x3f;
                  return String.fromCharCode(cc);
              });
              return strUni;
          }
      };
  
      while(i < 256) {
          var c = String.fromCharCode(i);
          a256 += c;
          r256[i] = i;
          r64[i] = b64.indexOf(c);
          ++i;
      }
  
      function code(s, discard, alpha, beta, w1, w2) {
          s = String(s);
          var buffer = 0,
              i = 0,
              length = s.length,
              result = '',
              bitsInBuffer = 0;
  
          while(i < length) {
              var c = s.charCodeAt(i);
              c = c < 256 ? alpha[c] : -1;
  
              buffer = (buffer << w1) + c;
              bitsInBuffer += w1;
  
              while(bitsInBuffer >= w2) {
                  bitsInBuffer -= w2;
                  var tmp = buffer >> bitsInBuffer;
                  result += beta.charAt(tmp);
                  buffer ^= tmp << bitsInBuffer;
              }
              ++i;
          }
          if(!discard && bitsInBuffer > 0) result += beta.charAt(buffer << (w2 - bitsInBuffer));
          return result;
      }
  
      var Plugin = $.base64 = function(dir, input, encode) {
              return input ? Plugin[dir](input, encode) : dir ? null : this;
          };
  
      Plugin.btoa = Plugin.encode = function(plain, utf8encode) {
          plain = Plugin.raw === false || Plugin.utf8encode || utf8encode ? UTF8.encode(plain) : plain;
          plain = code(plain, false, r256, b64, 8, 6);
          return plain + '===='.slice((plain.length % 4) || 4);
      };
  
      Plugin.atob = Plugin.decode = function(coded, utf8decode) {
          coded = coded.replace(/[^A-Za-z0-9\+\/\=]/g, "");
          coded = String(coded).split('=');
          var i = coded.length;
          do {--i;
              coded[i] = code(coded[i], true, r64, a256, 6, 8);
          } while (i > 0);
          coded = coded.join('');
          return Plugin.raw === false || Plugin.utf8decode || utf8decode ? UTF8.decode(coded) : coded;
      };
  }(jQuery));